ghsa-j46v-cqvq-vwmc
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
dmaengine: zynqmp_dma: In struct zynqmp_dma_chan fix desc_size data type
In zynqmp_dma_alloc/free_chan_resources functions there is a potential overflow in the below expressions.
dma_alloc_coherent(chan->dev, (2 * chan->desc_size * ZYNQMP_DMA_NUM_DESCS), &chan->desc_pool_p, GFP_KERNEL);
dma_free_coherent(chan->dev,(2 * ZYNQMP_DMA_DESC_SIZE(chan) * ZYNQMP_DMA_NUM_DESCS), chan->desc_pool_v, chan->desc_pool_p);
The arguments desc_size and ZYNQMP_DMA_NUM_DESCS were 32 bit. Though this overflow condition is not observed but it is a potential problem in the case of 32-bit multiplication. Hence fix it by changing the desc_size data type to size_t.
In addition to coverity fix it also reuse ZYNQMP_DMA_DESC_SIZE macro in dma_alloc_coherent API argument.
Addresses-Coverity: Event overflow_before_widen.
{
"affected": [],
"aliases": [
"CVE-2022-49320"
],
"database_specific": {
"cwe_ids": [
"CWE-190"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-26T07:01:08Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: zynqmp_dma: In struct zynqmp_dma_chan fix desc_size data type\n\nIn zynqmp_dma_alloc/free_chan_resources functions there is a\npotential overflow in the below expressions.\n\ndma_alloc_coherent(chan-\u003edev, (2 * chan-\u003edesc_size *\n\t\t ZYNQMP_DMA_NUM_DESCS),\n\t\t \u0026chan-\u003edesc_pool_p, GFP_KERNEL);\n\ndma_free_coherent(chan-\u003edev,(2 * ZYNQMP_DMA_DESC_SIZE(chan) *\n ZYNQMP_DMA_NUM_DESCS),\n chan-\u003edesc_pool_v, chan-\u003edesc_pool_p);\n\nThe arguments desc_size and ZYNQMP_DMA_NUM_DESCS were 32 bit. Though\nthis overflow condition is not observed but it is a potential problem\nin the case of 32-bit multiplication. Hence fix it by changing the\ndesc_size data type to size_t.\n\nIn addition to coverity fix it also reuse ZYNQMP_DMA_DESC_SIZE macro in\ndma_alloc_coherent API argument.\n\nAddresses-Coverity: Event overflow_before_widen.",
"id": "GHSA-j46v-cqvq-vwmc",
"modified": "2025-09-22T21:30:16Z",
"published": "2025-09-22T21:30:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49320"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4838969e4d95d2bd2995d1605b20d3144fcb3e74"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7b5488f4721fed6e121e661e165bab06ae2f8675"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/83960276ffc9bf5570d4106490346b61e61be5f3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/90aefae2e3a770a6909d339f5d8a988c0b0ceaf0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/95a0ba85c1b51b36e909841c02d205cd223ab753"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f9a9f43a62a04ec3183fb0da9226c7706eed0115"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
Sightings
| Author | Source | Type | Date |
|---|
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